Suction sweeper



April 5,1921; .Y Re. 16,585v

- H. E. HoovER SUCTION SWEEPAER Original Filed Oct. 9, 1916 5a/@n 2505 j ard Z'a'rZfLfom/er mme/5,5

Reima! Apr.`s,l1927. y y -UNITED STATES `rIOwAnn EARL HOOVER, or cIIIcAGo, ILLINOIS, AssIoNon, BY MESNE AssIoNnEN'rs, To THE HOOVER. COMPANY, OF NORTH CANTON, OIIIO, A coarOnArION or OHIO.

SUCTION SWEEPEL Original No. 1,286,321, dated December 3, 1918, Serial No. 124,545, aledctobere, 1916. reissue tiled February 11, 1920. Serial No. 357,880.

VMy invention relates to a brush particularly adapted for use in connection with vacuuin cleaners and means for mounting the same and associating a thread guard therewith.

The brush as applied to a vacuum cleaner in one form is illustrated in the accompanyino' drawings wherein Pigure 1 is a plan View with parts removed;

Fig. 2 isa vertical section on the line 2-2 of Fig. 1; Y F Fig. 3 is a cross section on the line 3-3 of ig. l;

Fig. 4 is a detail section on the line 4 4 of Fig. 3;

Fig. 5 is an end view of the brush and a portion of the mounting means with parts broken away. y Fig. 6 is a detail cross section through vthe end of the brush and associated partsf Like parts are indicated by the same let-l ter in all the gures.

A is the casing or hood of a vacuum sweeper, in the nozzle or open mouth of which the brush is to be placed. The brush consists of a body B which is here shown and preferably is hollow. It has enlarged ends C C and a shaft D which passes through the hollow body. In each end of the body is a bearing sleeve E through which the shaft passes. position in an desired manner and they preferably pro]ect at each end a little beyond the outer surface of the enlarged body ends C. This is only said to indicate that other Vfeatures of the invention are not to be restricted to use in connectipn with the hollow body.

The'ends of the shaft D are secured or supported in any desired `manner in the frame.

On each end of the shaft whatever may be' its structure is mounted a thread guard F which is cup-shaped. It overhangs andincludes the Outer end of the body and is' perforated at H H so as to permit air to pass inwardly through the bottom of suchI` cu shaped thread guard and then outward y through the edge of the end of the body as indicated by the arrow in Fig. 2. The arts are so arranged that the thread guar when secured on the'shaft, as for example bythe threads at G, the brush is pre- `end of the body end thus leavin These bearing sleeves are secured 1n Application 'for vented from longitudinal movement while being free to rotate on the shaft. The parts are also so arran ed that the bottom of the cup shaped threa guard Iis spaced from the the air to. On

channel'and space above referre referred form of my device lthe end of the the cess or depression C2 serves as a kind of receptacle or'reservoir to hold hair, thread, films, and the like. Oneof its edges may be beveled' as. indicated in Fig. 6. TheI outer surface of the flange C1, and the surface 'of the thread guard Opposed thereto are substantially parallel with the axis of the brush, the guard flange extendi inwardly along the brush beyond the brus flange.l

The brush body 1s provided with )a series of bosses projecting therefrom, and in 1this case arranged in the form of spirals. This reduces the labor of making the recesses into which' the bunches of brush bristles have to be inserted for each bossgis cast orV formed integral with the body so that itis in the proper position and relation. When the boss is recessed radially the brush bristles, if inserted in such recesses, wil1 roject out wardly in the proper manner. ch boss is' provided with a side perforation and of course there may beone or more, or they rush body takes the form Ofa flange may be arranged in anydesired manner,'.

through which the securing wire or twine is inserted. This lwire or twlne passes between the bristles in the proper manner and out and thence to the next bosswlier'e in like manner it lserves to-securel the next set of bristles. bristles are arran ed so as to eiectually sweep practically t e entire surface areaincluded between the ends lof the mouth or inlet and particularly the bristles next tO the central driving pulley J are set so as to overhang the pulley face. Speaking generally' of theentire structure the arrangementmost effectively prevents the artsfrom` displacement or injury or from ing forced into ino erative relations.v Cases and'frameswith w lich such brushes are commonly used are not infrequently made of light material capable ofl abundant giving and changing shape subject to blows. One'object of m invention, therefore, is to mount my br The bosses, and vtherefore, the

respond to or be injured by variations in the shape and .form of the case support or frame. In the structure as shown the shaft and brush always maintain their parallelism and their bearing surfaces are never cramped,.

twisted or shifted with reference to each other.

It will be understood'that I 'do not wish to confine myself to the particular form,

y be taken as in a sense diagrammatic intending only to suggest the general principles of my invention.

The ybosses'in addition to the other functional results ascribed to their'use, call for a minimum of material .but they are only the preferred form. The centering po1nt 1n the course" of manufacture lcan be marked on the bosses so as to leave no uncertainty as tothe point where the recess is to be made in order that the bristles may be in the right position. I have shown the br1stles as secured bywire and suggest that they might be secured by twine and that they could also be secured in any desired manner and'the parts thus-could be made of any desu-ed material.' If the bristles were secured 1n -the recesses of the bosses by other vmeans than wire or twine the lateral perforations in the bosses could be dispensed with.

The use and operation of my invention are sufficiently suggested by the description' of the form illustrated but a further statement of the matter is prepared.

The brush device when .as in the illustration provided with a shaft whose ends project can be mounted 'in any desired manner the shaft bein rotatably or otherwise supported in the frame of the case. In either event. the brush body is free to rotate on the shaft. The brush when its parts are assembled with the thread guard at the end can be inserted as a complete device in any suitable casing. With such a structure the air under proper conditions is free to move inwardly along the brush to keep thread, hair and the like from getting at the brush bearings. This action is further aided by the depression next to the end flange on the brush body. This depression and flange also tend to prevent the entrance of hair and the like in the space about the bearing.

Thus in the the thread, ha1r and the like is prevented from entering the space about the bearing by means of the depression and the flange and such thread, hair and the like is forced out of the space around the bearing by means of the inwardly drawn current of air. As previously suggested, an important referred form of the device,

feature of my invention whether the brush body be hollow or not and whateverv may be the shaft arrangement is uniting the bearings with the brush body so as to getr them permanently and rigidly mounted in proper relation and alinement. This is particularly important where a vhigh speed brush such as that to which my improvements refer is to be mounted in -a thin, light or yielding frame or case such as those usually employed in vacuum sweepers or cleaners.

1. A brush device comprising a rotatable brush body provided with a flange on its end, a narrow circumferential groove adjacent the flange and' a cup-shaped thread guard overhanging such groove.

2. A brush device comprising a rotatable brush body provided with a flange onits end, aunarrow circumferential groove adjacent the flange and' a cup-shaped thread to leavge an "annular opening between them.

4. A brushv device comprising a rotatable brush body provided with a flange on its end, a narrow circumferential groove adjacent the flange and a. cup-shaped thread guard overhanging such groove that side of the groove opposite the flange being beveled, said cup-shaped guard spaced from the flange so as to leave an annular opening between them.

5. In asuction sweeper a suctionvnozzle having an opensuetion mouth, a brush body flanged at its end mounted on the nozzle for rotation in the moutha guard flange surrounding and overlying the edge of said brush flange, said guard flange extending inwardly along the brush beyond the brush flange, the opposed surfaces of' the two flanges being substantially parallel with the axis of the brush.

In a suction sweeper a suction nozzle having an open suction mouth, a brush body flanged at its end, mounted on the nozzle for rotation in the mouth, a guard flange surrounding and overlying the edge of said brush flange, said guardsflange being A adjacent but out of contact with the brush flange,

the opposed surfaces of the two flanges being rotation in the mouth, a guard flange suruio o substantially parallel'with the axis of the,125

rounding and overlying the edge of said brush flange, said guard flange 'extending inwardly along the brush beyond the brush flange, said guard flange being adjacent but out of contact with the brush-flange, the opposed surfaces of the two flanges beincr substantially parallel with the axis of the brush.

8. In a suction sweeper a suction nozzle having an open suction mouth, a brush body flanged at its end, mounted for rotation therein, a guard flange surrounding andJ overhanging said brush flange, said guard flange extending inwardly along the brushA said guard flange being adjacent but out of contact with the brush flange, and means for inducing 'la draft of air inwardly along the brush through the annular space between the periphery ofeach brush flange and its adjacent flange.

9. In a suction sweeper a suction nozzle havin an open suction mouth, a brush body flange at its (end mounted for rotation therein, such flange projecting outwardly beyond the body of the brush, aA guard flange surrounding and overhanging said brush flange said guard flange projecting along the brushv ,beyond the brush flange`,`ancl out of contact with the brush'body.

10. In a suction sweeper a suction nozzle having an open suction mouth, ya brush body flanged at its end mounted for rotation therein, such flange projecting outwardly beyond the body of the brush, a guard' flange surrounding and overhanging said brush flange said guard flange being adjacent but out of contact with the brush flange, and out of contact with the brush body. i

11. In a suction-sweeper 4a suction nozzle having an open suction mouth, a brush body flanged at its end mounted for rotation therein, such flange- :projecting outwardly beyond the body of the brush, a guard flange surrounding and over-hanging .said brush flange, said guai-d flange projecting alongv the Abrush beyond the brush flange, ,said guard flange being adjacent, but out of contact with the brush' flange,and out of con- I tact with the brush body.

12. In a suction sweeper a suction nozzle fha-ving an open suction mouth, a brush body flanged at its end'- mounted for rotation January, 1920.

therein, such flange projecting outwardly,. f

a guard flange surrounding and overlying said brush flange, but out of contact with the brush body, means for.l directing a draft of air inwardly along the brush through the annular space between the periphery of Vsai-d brush flange and its opposed guard flange.

13. In .a suction sweeper a suction nozzle having an open suction mouth, a brushvbody flanged at its -ends mounted for rotation therein, such flanges projecting outwardly, a guard flange surrounding and overhanging each of said brush flanges, each guard flange ,the guard memberswhen secured on said shaft preventing relative longitudinal movement between the shaft and brush body, both when the assemblagejis mounted in a suc'- tion sweeper and when it is removed therefrom. Y

l5. Ina suction sweeper, a unitary removable brushv assemblage comprising, a shaft, a hollow brush body mounted thereon, the brush body flanged at its ends, bearing guards mounted on the shaft adjacent the ends of the brush body, the bearing.

guards having a guard flange surrounding and loverlying the brush flange outof contact therewith, vthere being (zo-operative means on said shaft and said bearing guards whereby the guards are secured to the shaft, the guards when secured to the shaft allowingl relative revolvable movement of Vthe brush body on the shaft but preventing rela-- tive longitudinal movement thereof both when the assemblage is mounted in asuction sweeper and when removed therefrom.

y Signed at the citv of Chicago, county of Cook, and state 0f illinois, this 28th day of H. EARL HOOVER. 

